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just these past few days I noticed that my '92 Cougar 3.8 will give a bucking sensation anywhere past 40km/h. Can't replicate it while idleing, only when the motor is under pressure.

In the past six months I've replaced the fuel filter, plugs, wires, thermostat, and probably some other stuff I can't remember.

I'm thinking maybe the fuel injectors are closed up?

Or maybe the fuel filter is jammed up. Lately I've run out of gas about three times in the past month.

help?
 

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I hate to say it, but it may help. Clean the Mass Air flow senor. Mine did the same thing.
 

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Fuel pump sounds good. Might want to also clean out your intake manifold. Is your air filter in good shape?
 
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